A new species of<i>Mecodema</i>(Carabidae: Broscini) from Northland, New Zealand, with notes on a newly observed structure within the female genitalia

Abstract

Mecodema kokoromatua sp.n. (Carabidae: Broscini) is described from specimens collected from a small stretch of coastal forest adjacent to the Ahipara escarpment, Northland. We include a revised key and phylogeny for the ‘curvidens group’, and raise the number of endemic broscine species in Northland to eight. The ventral bursal keel is a newly identified structure from the female reproductive tract, which is attached ventrally to the helminthoid sclerite. The ventral bursal keel is Y-shaped in the ‘curvidens group’.